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  <p>
    Reports unset dynamic values.
  </p>
  <p>
    A dynamic value is considered as unset if it is
    used (by, such as, has-flag expressions)
    but not set (by, such as, set-flag expressions).
  </p>
  <p><b>Example:</b></p>
  <pre>
# some_script_file.txt
some_definition = {
    set_global_flag = flag
    some_prop = {
        limit = {
            has_global_flag = unset_flag # used but not set 
        }
        # ...
    }
}</pre>
  <!-- tooltip end -->
  <p>
    A dynamic value is declared or used in a script expression matching CWT expression data type
    <code>"value"</code> or <code>"value_set"</code>,
    before <code>"@"</code> if it exists.
  </p>
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